[BUG] 7 unnecessary icons being generated for iOS

### :information_source: Info

Version: `v0.13.1`

### :speech_balloon: Description

7 unnecessary icons being generated for iOS.

### :scroll: Pubspec.yaml

```
flutter_icons:
ios: true
android: true
image_path: 'assets/launcher/icon.png'
min_sdk_android: 19
adaptive_icon_background: '#fff'
adaptive_icon_foreground: 'assets/launcher/foreground.png'
remove_alpha_ios: true
web:
generate: true
image_path: 'assets/launcher/foreground.png'
background_color: '#fff'
theme_color: '#fff'
windows:
generate: true
image_path: 'assets/launcher/icon.png'
macos:
generate: true
image_path: 'assets/launcher/icon.png'
```

We ask that you include your pubspec.yaml file as a common problem we have seen has been the pubspec.yaml file being incorrect